* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a {
    text-decoration: none;
}

ul,ol{
    list-style: none;
}
@media (max-width: 1500px) {
    .container {
        width: 980px;
        margin: 0 auto;
        min-width: 1000px;
    }

    header .container {
        width: 980px;
        position: relative;
        margin: 0 auto;
    }

    header nav {
        min-width: 980px;
        height: 70px;
        position: relative;
        box-shadow: 0px 2px 20px 0px rgba(0, 0, 0, 0.08)
    }

    header nav .logo>img {
        width: 36px;
        vertical-align: bottom;
    }

    header nav .logo {
        font-size: 28px;
        color: #0078f8;
        font-weight: 600;
        position: absolute;
        left: 0;
        top: 14px;
        cursor: pointer;
    }

    header nav .logo .logo_none {
        display: none;
        position: absolute;
        top:-2px;
    }

    header nav .container ul {
        width: 500px;
        list-style: none;
        display: flex;
        justify-content: space-around;
        font-size: 16px;
        position: absolute;
        top: 23px;
        left: 20%;
    }

    header nav .container  ul  li {
        position: relative;
    }

    header nav .container  ul  li a {
        text-decoration: none;
        color: black;
    }

    header nav .container ul li ul {
        position: absolute;
        left: -80px;
        top: 40px;
        width: 230px;
        padding: 20px 0;
        display: flex;
        flex-flow: row wrap;
        justify-content: space-around;
        align-content: space-around;
        background-color: #fff;
        box-shadow: 0px 2px 20px 0px rgba(0, 0, 0, 0.08);
        z-index: 1;
    }

    .let {
        display: none;
    }

    header nav .container ul li ul li {
        width: 72px;
        height: 28px;
        line-height: 28px;
        font-size: 14px;
        margin: 5px 5px;
        text-align: center;
        color: #222222;
    }

    header nav .container ul li ul li:hover {
        background-color: #007bf8;
        color: #fff;
    }

    header nav .container ul li a {
        display: block;
        height: 70px;
    }

    header nav .container ul li a:hover {
        color: #007bf8;
    }

    header nav .login {
        width: 90px;
        height: 32px;
        border: 1px solid #0078f8;
        border-radius: 5px;
        position: absolute;
        top: 18px;
        right: 10px;
        display: flex;
        justify-content: space-around;
    }

    header nav .login a {
        line-height: 30px;
        font-size: 14px;
        color: #0078f8;
    }

    header nav .login a:hover {
        color: #3292f9;
    }

    header nav .login:after {
        content: '';
        width: 2px;
        height: 16px;
        background-color: #0078f8;
        position: absolute;
        left: 50%;
        top: 7px;
        transform: translate(-50%,0);
    }

    .container .search .search_input .query {
        position: absolute;
        top: 0px;
        z-index: 2;
        display: none;
    }

    .container .search .search_input .query .kb {
        width: 100px;
        height: 60px;
    }

    .container .search .search_input .query ul {
        width: 100px;
        height: 120px;
        padding: 15px 15px;
        margin: 0;
        font-size: 14px;
        display: flex;
        flex-flow: column;
        justify-content: space-around;
        text-align: center;
        color: #666666;
        background-color: #fff;
        border-radius: 5px;
        box-shadow:  0px 2px 20px 0px rgba(0, 0, 0, 0.08);
    }

    .container .search .search_input .query ul li:hover {
        color: #0078f8;
        cursor: pointer;
    }

    .container .search .search_input .query1 {
        position: absolute;
        top: 23px;
        left: -170px;
        z-index: 2;
        display: none;
    }

    .container .search .search_input .query1 .kb {
        width: 100px;
        height: 46px;
        border-radius: 5px;
        position: absolute;
        left: 170px;
        top: -22px;
    }

    .container .search .search_input .query1 ul {
        width: 100px;
        height: 120px;
        padding: 15px 15px;
        margin: 0;
        font-size: 14px;
        display: flex;
        flex-flow: column;
        justify-content: space-around;
        text-align: center;
        color: #666666;
        background-color: #fff;
        border-radius: 5px;
        box-shadow:  0px 2px 20px 0px rgba(0, 0, 0, 0.08);
    }

    .container .search .search_input .query1 ul li:hover {
        color: #0078f8;
        cursor: pointer;
    }

    .container .search .search_input .search_content {
        width: 665px;
        height: 392px;
        position: absolute;
        left: 160px;
        top: 60px;
        background-color: #fff;
        z-index: 3;
        padding: 0px 18px;
        box-shadow:  0px 2px 20px 0px rgba(0, 0, 0, 0.08);
        display: none;
    }

    .container .search .search_input .search_content h5 {
        font-size: 12px;
        display: block;
        height: 40px;
        line-height: 40px;
        color: #999;
        font-weight: 400;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }

    .container .search .search_input .search_content h5::after {
        content: '';
        display: block;
        width: 20px;
        height: 20px;
        background: url(../img/delete_history_default.png) no-repeat;
        background-size: 100% 100%;
        position: absolute;
        right: 15px;
        top: 15px;
        cursor: pointer;
    }

    .container .search .search_input .search_content p {
        font-size: 12px;
        display: block;
        height: 40px;
        line-height: 40px;
        color: #999;
        font-weight: 400;
    }

    .container .search .search_input .search_content ul {
        margin: 0;
        width: 100%;
        height: 300px;
        display: flex;
        flex-flow: column nowrap;
        color: #222222;
        font-size: 12px;
    }

    .container .search .search_input .search_content ul li:hover {
        cursor: pointer;
        background-color: #eff5fc;
        color: #0078f8;
    }

    .container .search .search_input .search_content ul span {
        display: inline-block;
        text-align: center;
        line-height: 15px;
        width: 15px;
        height: 15px;
        color: #fff;
        font-size: 12px;
        background-color: #cad1d8;
        margin-right: 10px;
    }

    .ajax {
        display: none;
    }

    .container .search .search_input .search_content1 {
        width: 665px;
        height: 200px;
        position: absolute;
        left: 160px;
        top: 60px;
        background-color: #fff;
        z-index: 5;
        padding: 0px 18px;
        box-shadow:  0px 2px 20px 0px rgba(0, 0, 0, 0.08);
        display: flex;
        justify-content: space-around;
        flex-flow: row wrap;
        align-content: space-around;
        text-align: center;
        font-size: 24px;
    }

    .container .search .search_input .search_content1 p {
        display: block;
        width: 25%;
    }

    .blue {
        background-color: #0078f8!important;
    }

    .container .search {
        margin: 30px auto;
        width: 680px;
        height: 100px;
    }

    .container .search .search_input {
        width: 100%;
        height: 60px;
        border-radius: 10px;
        border: 2px solid #0078f8;
        overflow: hidden;
    }

    .container .search .search_input > span {
        display: inline-block;
        width: 100px;
        height: 30px;
        margin: 15px auto;
        color: #666666;
        text-indent: 22px;
        border-right: 2px solid #ebebeb;
        line-height: 30px;
        position: relative;
        font-size: 16px;
    }

    .container .search .search_input > span:after {
        content: '';
        display: inline-block;
        width: 6px;
        height: 6px;
        border-bottom: 1px solid #666666;
        border-right: 1px solid #666666;
        transform: rotate(45deg);
        position: absolute;
        top: 10px;
        left: 64px;
    }

    .container .search .search_input input {
        width: 460px;
        height: 30px;
        font-size: 16px;
        text-indent: 4px;
        border: none;
        outline: none;
        color: #999;
    }

    .container .search .search_input button {
        position: absolute;
        width: 112px;
        height: 56px;
        border: none;
        background-color: #0078f8;
        border-top-right-radius: 5px;
        border-bottom-right-radius: 5px;
        color: #fff;
        font-size: 20px;
        font-family: 'icomoon';
    }
    .container .nav_ul .let ul{
        z-index: 9;
    }

    .PPT .head > a:hover {
        color: #007bf8!important;
    }

    .container .search .search_input button:hover {
        background-color: #3695f9;
    }

    header .container .search ul {
        margin-top: 15px;
        display: flex;
        justify-content: space-around;
        font-size: 15px;
        color: #999;
    }

    header .container .search ul li a {
        font-size: 14px;
        color: #999;
    }

    header .container .search ul li a:hover {
        color: #0078f8;
    }

    .fixed_nav {
        min-width: 980px;
        width: 100%;
        height: 70px;
        position: relative;
        box-shadow: 0px 2px 20px 0px rgba(0, 0, 0, 0.08);
        position: fixed;
        left: 0;
        top:0;
        z-index: 10;
        background-color: #fff;
        display: none;
    }

    .fixed_nav .container {
        width: 980px;
        position: relative;
        margin: 0 auto;
    }

    .fixed_nav .logo {
        font-size: 28px;
        color: #0078f8;
        font-weight: 600;
        position: absolute;
        left: 0;
        top: 14px;
        cursor: pointer;
    }

    .fixed_nav .logo .logo_none {
        display: none;
        position: absolute;
        top:-2px;
        transition: all 2s;
    }

    .fixed_nav .logo>img {
        width: 36px;
        vertical-align: bottom;
    }

    .fixed_nav .login {
        width: 90px;
        height: 32px;
        border: 1px solid #0078f8;
        border-radius: 5px;
        position: absolute;
        top: 18px;
        right: 10px;
        display: flex;
        justify-content: space-around;
    }

    .fixed_nav .login a {
        line-height: 30px;
        font-size: 14px;
        color: #0078f8;
    }

    .fixed_nav .login a:hover {
        color: #3292f9;
    }

    .fixed_nav .login::after {
        content: '';
        width: 2px;
        height: 16px;
        background-color: #0078f8;
        position: absolute;
        left: 50%;
        top: 7px;
        transform: translate(-50%,0);
    }

    .fixed_nav .search {
        width: 418px;
        margin: 0;
        position: relative;
        left: 360px;
        top:11px;
    }

    .fixed_nav .container ul {
        position: absolute;
        width: 150px;
        left: 170px;
        top: 24px;
        display: flex;
        justify-content: space-around;
    }

    .fixed_nav .container> ul:nth-child(2)::after {
        content: '';
        display: inline-block;
        width: 6px;
        height: 6px;
        border-bottom: 1px solid #666666;
        border-right: 1px solid #666666;
        transform: rotate(45deg);
        position: absolute;
        top: 7px;
        left: 140px;
    }

    .fixed_nav .container ul li a {
        color: #222222;
    }

    .fixed_nav .search .search_input {
        height: 48px;
    }

    .fixed_nav .search .search_input span {
        margin: 7px 0px;
        line-height: 30px;
        font-size: 15px;
    }

    .fixed_nav .search .search_input span::after {
        top: 12px;
    }

    .fixed_nav .search .search_input input {
        width: 210px;
        font-size: 15px;
        
    }

    .fixed_nav .search .search_input button {
        height: 44px;
        width: 100px;
    }

    section {
        position: relative;
        width: 100%;
        min-width: 1000px;
        height: 300px;
        overflow: hidden;
    }

    section > ul {
        width:1000%;
        min-width: 1000px;
        position: absolute;
        left: 0px;
        top: 0px;
    }

    section > ul li {
        width: 10%;
        min-width: 1000px;
        float: left;
    }

    section ul li img {
        width: 100%;
        min-width: 1000px;
        height: 300px;
    }

    section .btns {
        display: none;
    }

    section .prev {
        width: 49px;
        height: 49px;
        background-color: rgba(0,0,0,.2);;
        border-radius: 50%;
        position: absolute;
        left: 20px;
        top: 50%;
        transform: translate(0,-50%);
        opacity: .6;
    }

    section .prev::after{
        content: '';
        display: inline-block;
        width: 12px;
        height: 12px;
        border-bottom: 2px solid #fff;
        border-right: 2px solid #fff;
        transform: rotate(135deg);
        position: absolute;
        top: 17px;
        left: 20px;
    }

    section .prev:hover {
        background-color: rgba(0,0,0,.35);;
    }

    section .next {
        width: 49px;
        height: 49px;
        background-color: rgba(0,0,0,.2);
        border-radius: 50%;
        position: absolute;
        right: 65px;
        top: 50%;
        transform: translate(0,-50%);
        opacity: .6;
    }

    section .next::after{
        content: '';
        display: inline-block;
        width: 12px;
        height: 12px;
        border-bottom: 2px solid #fff;
        border-right: 2px solid #fff;
        transform: rotate(-45deg);
        position: absolute;
        top: 17px;
        left: 15px;
    }

    section .next:hover {
        background-color: rgba(0,0,0,.35);;
    }

    section .tab_yuan {
        height: 18px;
    }

    .currens { 
        background-color: #fff!important;
    }

    section .tab_yuan ul{
        height: 18px;
        background-color: rgba(0,0,0,.3);
        display: flex;
        justify-content: center;
        align-items: center;
        border-radius: 10px;
        position: absolute;
        bottom: 15px;
        left:50%;
        padding: 0 5px;
        transform: translate(-50%,0);
    }

    section .tab_yuan ul li {
        width: 11px;
        height: 11px;
        border-radius: 50%;
        background-color: rgba(255,255,255,.5);
        margin-left: 3px;
        margin-right: 3px;
        opacity: 1;
        cursor: pointer;
    }

    .container .imgs {
        margin: 30px 0 30px 0 ;
        display: flex;
        justify-content: space-between;
    }

    .container .imgs div {
        width: 232px;
        height: 130px;
        border-radius: 5px;
        overflow: hidden;
        position: relative;
    }

    @keyframes moves {
        0% {
            top: 0;
        }
        100% {
            top: -103%;
        }
    }

    /* .container .imgs:nth-child(1):hover a{
        animation: moves 1s forwards;
    } */

    .container .imgs div img {
        width: 100%;
        height: 100%;
    }

    .container .imgs div a {
        display: block;
        position: relative;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.4);
        top: 0%;
        line-height: 130px;
        text-align: center;
        font-size: 24px;
        color: #fff;
        font-weight: 700;
        z-index: 1;
    }

    .container .PPT .head {
        margin: 30px 0 15px 0;
        position: relative;
    }

    .container .PPT .head span {
        font-size: 26px;
        font-weight: 500;
    }

    .container .PPT .head ul {
        width: 450px;
        height: 50px;
        display: flex;
        justify-content: space-between;
        position: absolute;
        left: 140px;
        top: 5px;
    }

    .container .PPT .head ul li {
        width: 100px;
        height: 25px;
        background-color: #f2f2f2;
        color: #666;
        font-size: 14px;
        line-height: 25px;
        text-align: center;
    }

    .currte {
        background-color: #007bf8!important;
        color: #fff!important;
    }

    .container .PPT .head a {
        display: block;
        float: right;
        margin-right: 15px;
        position: relative;
        color: #222222;
        font-size: 14px;
    }

    .container .PPT .head a::after {
        content: "";
        width: 6px;
        height: 6px;
        border-bottom: 2px solid #333;
        border-right: 2px solid #333;
        transform: rotate(-45deg);
        position: absolute;
        top: 6px;
        left: 56px;
    }

    .container .PPT .head ul li {
        cursor: default;
    }

    .container .PPT .content ul {
        display: flex;
        justify-content: space-between;
    }

    .container .PPT .content ul li {
        width: 230px;
        height: 368px;
        border: 1px solid #f0f0f0;
        overflow: hidden;
        border-radius: 5px;
        position: relative;
    }

    .container .PPT .content ul li img {
        width: 230px;
    }

    .container .PPT .content > div {
        display: none;
    }

    .container .PPT .content > div:nth-child(1) {
        display: block;
    }

    .container .PPT .content ul li p {
        display: block;
        width: 230px;
        height: 42px;
        line-height: 42px;
        font-size: 14px;
        color: #222;
        text-align: center;
    }

    .PPT .content ul li [data-index] {
        width: 230px;
        height: 322px;
        background: rgba(37, 46, 63, 0.5);
        position: absolute;
        left: 0;
        top:0;
        display: none;
    }

    .PPT .content ul li [data-index] button {
        display: inline-block;
        width: 131px;
        height: 51px;
        line-height: 51px;
        text-align: center;
        color: #fff;
        border-radius: 5px;
        background-color: transparent;
        outline: none;
        border: none;
    }

    .PPT .content ul li [data-index] button:nth-child(1) {
        background-color: #007bf8;
        position: absolute;
        left: 50%;
        top: 100px;
        transform: translate(-50%,0);
    }

    .PPT .content ul li [data-index] button:nth-child(2) {
        border: 2px solid #fff;
        line-height: 45px;
        text-indent: 1.2em;
        position: absolute;
        left: 50%;
        top: 165px;
        transform: translate(-50%,0);
    }

    .PPT .content ul li [data-index] button:nth-child(2) img {
        margin-left: 25px;
    }

    .PPT .content ul li [data-index] button:hover {
        background-color: #3695f9;
        border: none;
    }

    .PPT .content ul li [data-index] a {
        color: #fff;
        vertical-align: middle;
        font-size: 16px;
    }

    .PPT .content ul li [data-index] img {
        width: 20px;
        height: 20px;
        vertical-align: middle;
        margin-left: 8px;
    }

    .container article {
        position: relative;
        margin: 30px 0 30px 0;
    }

    .container article > ul {
        display: flex;
        justify-content: space-between;
    }

    .container article > ul > li {
        width: 310px;
        height: 445px;
        border: 1px solid #ebebeb;
        border-radius: 5px;
    }

    .container article > ul > li .head {
        width: 310px;
        height: 50px;
        position: relative;
    }

    .container article > ul > li .head img {
        width: 25px;
        height: 25px;
        margin: 12.5px 0 0 15px;
        vertical-align: bottom;
    }

    .container article > ul > li .head :nth-child(2) {
        color: #fff;
        font-size: 18px;
    }

    .container article > ul > li .head :nth-child(3) {
        color: #fff;
        font-size: 14px;
        position: absolute;
        top: 15px;
        right: 40px;
    }

    .container article > ul > li .head :nth-child(3):after {
        content: "";
        width: 6px;
        height: 6px;
        border-bottom: 2px solid #fff;
        border-right: 2px solid #fff;
        transform: rotate(-45deg);
        position: absolute;
        top: 6px;
        right: -10px;
    }

    .container article > ul > li:nth-child(1) .head {
        background: url(../img/PPT教程.png) no-repeat;
        background-size: 100% 100%;
    }

    .container article > ul > li:nth-child(2) .head {
        background: url(../img/Word教程.png) no-repeat;
        background-size: 100% 100%;
    }

    .container article > ul > li:nth-child(3) .head {
        background: url(../img/Excel教程.png) no-repeat;
        background-size: 100% 100%;
    }

    .container article ul li .content ul {
        width: 270px;
        height: 360px;
        margin: 20px auto;
        position: relative;
        /* display: flex;
        flex-flow: column nowrap; */
    }

    .container article ul li .content ul li {
        width: 270px;
        height: 36px;
        line-height: 36px;
        /* 溢出文本用...方式显示 */
        text-overflow: ellipsis;
        overflow: hidden;
        /* 规定段落中文本不换行 */
        white-space: nowrap;
        font-size: 14px;
        color: #4e4e4e;
    }

    .container article ul li .content ul li span {
        color: #888;
        margin-right: 5px;
    }

    .container article ul li .content ul li:hover {
        background-color: #eff5fc;
        cursor: pointer;
    }

    .frist {
        color: #fc7750!important;
    }

    .second {
        color: #569ffd!important;
    }

    .third {
        color: #30c489!important;
    }

    .container .list_friend .head {
        width: 100%;
        height: 60px;
        border-top: 1px solid #ebebeb;
    }

    .container .list_friend .head ul {
        width: 200px;
        display: flex;
        justify-content: space-around;
        line-height: 60px;
        color: #222;
        font-size: 15px;
    }

    .container .list_friend .head ul li {
        cursor: pointer;
    }

    .container .list_friend .head .current {
        color: #0078f8;
    }
    
    .container .list_friend .body {
        width: 100%;
        font-size: 14px;
        margin-top: 10px;
        color: #7a7a7a;
    }

    .container .list_friend .body ul {
        display: flex;
        flex-flow: row wrap;
    }

    .container .list_friend .none {
        display: none;
    }

    .container .list_friend .body ul li {
        padding: 0 10px 0 10px;
        line-height: 30px;
    }

    .container .list_friend .body ul li:hover {
        color: #0078f8;
        cursor: pointer;
    } 

    footer {
        width: 100%;
        min-width: 1000px;
        height: 340px;
        margin-top: 50px;
        background-color: #2b3139;
    }

    footer .container {
        height: 100%;
        position: relative;
    }

    footer .container ul {
        position: absolute;
    }

    footer .container ul li{
        padding: 10px 0 10px 0;
        color: #95989c;
        font-size: 12px;
    }

    footer .container ul .big {
        color: #c2c4c6;
        font-size: 14px;
        margin-bottom: 25px;
    }

    footer .container .bottom {
        width: 100%;
        height: 65px;
        border-top: 1px solid #434951;
        position: absolute;
        bottom: 0;
        text-align: center;
        line-height: 65px;
        color: #6c7076;
        font-size: 12px;
    }

    footer .container ul{
        position: absolute;
        top:50px
    }

    footer .container .ul_1 {
        left: 0;
    }

    footer .container .ul_2 {
        left: 140px;
    }

    footer .container .ul_3 {
        top: 50px;
        left: 380px;
        width: 400px;
        display: flex;
        flex-flow: row wrap;
        justify-content: space-between;
    }

    footer .container .ul_3 li {
        width: 25%;
        padding: 0;
    }

    footer .container .ul_4 {
        left: 880px;
    }

    footer .container .ul_4 li img {
        width: 80px;
        height: 80px;
        margin-left: 5px;
    }

    .cbl {
        width: 45px;
        height: 100%;
        background-color: #ffffff;
        position: fixed;
        right: 0px;
        top:0;
        box-shadow: 5px 5px 10px 5px rgb(0 0 0 / 8%);
        z-index: 11;
    }

    .cbl ul li {
        width: 100%;
        height: 80px;
        text-align: center;
        font-size: 12px;
        padding-top: 15px;
        border-bottom: 1px solid #e9e9e9;
    }

    .cbl ul li:hover {
        background-color: #0078f8;
        color: #fff;
    }

    .cbl ul li > img {
        width: 22px;
        height: 22px;
        margin: 0px 11.5px 0;
        position: relative;
    }

    .cbl .cbl_zq {
        width: 300px;
        height: 125px;
        position: absolute;
        left: -300px;
        top: 60px;
        display: none;
        border-radius: 5px;
    }

    .cbl .cbl_zq img {
        width: 300px;
    }

    .cbl .cbl_kf {
        width: 240px;
        height: 170px;
        position: absolute;
        top: 120px;
        left: -240px;
        background-color: #fff;
        border-radius: 5px;
        display: none;
    }

    .cbl .cbl_kf span {
        display: block;
        width: 240px;
        height: 34px;
        background-color: #0078f8;
        line-height: 34px;
        text-indent: 15px;
        font-size: 12px;
        color: #fff;
    }

    .cbl .cbl_kf p {
        font-size: 14px;
        text-indent: 30px;
        margin-top: 15px;
        color: #777;
    }

    .cbl .cbl_kf p img {
        vertical-align: bottom;
        margin-right: 5px;
    }

    .cbl .cbl_kf button {
        width: 106px;
        height: 32px;
        line-height: 32px;
        background-color: #0078f8;
        outline: none;
        border: none;
        border-radius: 20px;
        color: #fff;
        position: relative;
        top: 20px;
        left: 40px;
    }

    .cbl .cbl_kf button img {
        margin-right: 5px;
        vertical-align: text-top;
    }

    .cbl .back {
        position: absolute;
        bottom: 0;
        height: 80px;
        text-align: center;
        font-size: 12px;
        cursor: pointer;
    }

    .cbl .back img {
        width: 14px;
        height: 16px;
        margin: 25px 15px 0;
    }

    .cbl .back:hover  {
        color: #fff;
        background-color: #0078f8;
    }

    .cbl ul li img:nth-child(2) {
        display: none;
    }

    .cbl ul li:hover img:nth-child(1){
        display: none;
    }

    .cbl ul li:hover img:nth-child(2){
        display: block;
    }

    .cbl .back:hover img:nth-child(1){
        display: none;
    }

    .cbl .back img:nth-child(2){
        display: none;
    }

    .cbl .back:hover img:nth-child(2){
        display: block;
    }
}

@media (min-width: 1500px) {
    .container {
        width: 1300px;
        margin: 0 auto;
        min-width: 1300px;
    }

    header .container {
        width: 1300px;
        position: relative;
        margin: 0 auto;
    }

    header nav {
        min-width: 1300px;
        height: 70px;
        position: relative;
        box-shadow: 0px 2px 20px 0px rgba(0, 0, 0, 0.08)
    }

    header nav .logo>img {
        width: 36px;
        vertical-align: bottom;
    }

    header nav .logo {
        font-size: 28px;
        color: #0078f8;
        font-weight: 600;
        position: absolute;
        left: 0;
        top: 14px;
        cursor: pointer;
    }

    header nav .logo .logo_none {
        display: none;
        position: absolute;
        top:-2px;
    }

    header nav .container ul {
        width: 500px;
        list-style: none;
        display: flex;
        justify-content: space-around;
        font-size: 16px;
        position: absolute;
        top: 23px;
        left: 20%;
    }

    header nav .container  ul  li {
        position: relative;
    }

    header nav .container  ul  li a {
        text-decoration: none;
        color: black;
    }

    header nav .container ul li ul {
        position: absolute;
        left: -80px;
        top: 40px;
        width: 230px;
        padding: 20px 0;
        display: flex;
        flex-flow: row wrap;
        justify-content: space-around;
        align-content: space-around;
        background-color: #fff;
        box-shadow: 0px 2px 20px 0px rgba(0, 0, 0, 0.08);
        z-index: 1;
    }

    .let {
        display: none;
    }

    header nav .container ul li ul li {
        width: 72px;
        height: 28px;
        line-height: 28px;
        font-size: 14px;
        margin: 5px 5px;
        text-align: center;
        color: #222222;
    }

    header nav .container ul li ul li:hover {
        background-color: #007bf8;
        color: #fff;
    }

    header nav .container ul li a {
        display: block;
        height: 70px;
    }

    header nav .container ul li a:hover {
        color: #007bf8;
    }

    header nav .login {
        width: 90px;
        height: 32px;
        border: 1px solid #0078f8;
        border-radius: 5px;
        position: absolute;
        top: 18px;
        right: 10px;
        display: flex;
        justify-content: space-around;
    }

    header nav .login a {
        line-height: 30px;
        font-size: 14px;
        color: #0078f8;
    }

    header nav .login a:hover {
        color: #3292f9;
    }

    header nav .login:after {
        content: '';
        width: 2px;
        height: 16px;
        background-color: #0078f8;
        position: absolute;
        left: 50%;
        top: 7px;
        transform: translate(-50%,0);
    }

    .container .search .search_input .query {
        position: absolute;
        top: 0px;
        z-index: 2;
        display: none;
    }

    .container .search .search_input .query .kb {
        width: 100px;
        height: 60px;
    }

    .container .search .search_input .query ul {
        width: 100px;
        height: 120px;
        padding: 15px 15px;
        margin: 0;
        font-size: 14px;
        display: flex;
        flex-flow: column;
        justify-content: space-around;
        text-align: center;
        color: #666666;
        background-color: #fff;
        border-radius: 5px;
        box-shadow:  0px 2px 20px 0px rgba(0, 0, 0, 0.08);
    }

    .container .search .search_input .query ul li:hover {
        color: #0078f8;
        cursor: pointer;
    }

    .container .search .search_input .query1 {
        position: absolute;
        top: 23px;
        left: -170px;
        z-index: 2;
        display: none;
    }

    .container .search .search_input .query1 .kb {
        width: 100px;
        height: 46px;
        border-radius: 5px;
        position: absolute;
        left: 170px;
        top: -22px;
    }

    .container .search .search_input .query1 ul {
        width: 100px;
        height: 120px;
        padding: 15px 15px;
        margin: 0;
        font-size: 14px;
        display: flex;
        flex-flow: column;
        justify-content: space-around;
        text-align: center;
        color: #666666;
        background-color: #fff;
        border-radius: 5px;
        box-shadow:  0px 2px 20px 0px rgba(0, 0, 0, 0.08);
    }

    .container .search .search_input .query1 ul li:hover {
        color: #0078f8;
        cursor: pointer;
    }

    .container .search .search_input .search_content {
        width: 665px;
        height: 392px;
        position: absolute;
        left: 320px;
        top: 60px;
        background-color: #fff;
        z-index: 3;
        padding: 0px 18px;
        box-shadow:  0px 2px 20px 0px rgba(0, 0, 0, 0.08);
        display: none;
    }

    .container .search .search_input .search_content h5 {
        font-size: 12px;
        display: block;
        height: 40px;
        line-height: 40px;
        color: #999;
        font-weight: 400;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }

    .container .search .search_input .search_content h5::after {
        content: '';
        display: block;
        width: 20px;
        height: 20px;
        background: url(../img/delete_history_default.png) no-repeat;
        background-size: 100% 100%;
        position: absolute;
        right: 15px;
        top: 15px;
        cursor: pointer;
    }

    .container .search .search_input .search_content p {
        font-size: 12px;
        display: block;
        height: 40px;
        line-height: 40px;
        color: #999;
        font-weight: 400;
    }

    .container .search .search_input .search_content ul {
        margin: 0;
        width: 100%;
        height: 300px;
        display: flex;
        flex-flow: column nowrap;
        color: #222222;
        font-size: 12px;
    }

    .container .search .search_input .search_content ul li:hover {
        cursor: pointer;
        background-color: #eff5fc;
        color: #0078f8;
    }

    .container .search .search_input .search_content ul span {
        display: inline-block;
        text-align: center;
        line-height: 15px;
        width: 15px;
        height: 15px;
        color: #fff;
        font-size: 12px;
        background-color: #cad1d8;
        margin-right: 10px;
    }

    .blue {
        background-color: #0078f8!important;
    }

    .container .search {
        margin: 30px auto;
        width: 680px;
        height: 100px;
    }

    .container .search .search_input {
        width: 100%;
        height: 60px;
        border-radius: 10px;
        border: 2px solid #0078f8;
        overflow: hidden;
    }

    .container .search .search_input > span {
        display: inline-block;
        width: 100px;
        height: 30px;
        margin: 15px auto;
        color: #666666;
        text-indent: 22px;
        border-right: 2px solid #ebebeb;
        line-height: 30px;
        position: relative;
        font-size: 16px;
    }

    .container .search .search_input > span:after {
        content: '';
        display: inline-block;
        width: 6px;
        height: 6px;
        border-bottom: 1px solid #666666;
        border-right: 1px solid #666666;
        transform: rotate(45deg);
        position: absolute;
        top: 10px;
        left: 64px;
    }

    .container .search .search_input input {
        width: 460px;
        height: 30px;
        font-size: 16px;
        text-indent: 4px;
        border: none;
        outline: none;
        color: #999;
    }

    .container .search .search_input button {
        position: absolute;
        width: 112px;
        height: 56px;
        border: none;
        background-color: #0078f8;
        border-top-right-radius: 5px;
        border-bottom-right-radius: 5px;
        color: #fff;
        font-size: 20px;
        font-family: 'icomoon';
    }
    .container .nav_ul .let ul{
        z-index: 9;
    }

    .PPT .head > a:hover {
        color: #007bf8!important;
    }

    .container .search .search_input button:hover {
        background-color: #3695f9;
    }

    header .container .search ul {
        margin-top: 15px;
        display: flex;
        justify-content: space-around;
        font-size: 15px;
        color: #999;
    }

    header .container .search ul li a {
        font-size: 14px;
        color: #999;
    }

    header .container .search ul li a:hover {
        color: #0078f8;
    }

    .fixed_nav {
        min-width: 980px;
        width: 100%;
        height: 70px;
        position: relative;
        box-shadow: 0px 2px 20px 0px rgba(0, 0, 0, 0.08);
        position: fixed;
        left: 0;
        top:0;
        z-index: 10;
        background-color: #fff;
        display: none;
    }

    .fixed_nav .container {
        width: 980px;
        position: relative;
        margin: 0 auto;
    }

    .fixed_nav .logo {
        font-size: 28px;
        color: #0078f8;
        font-weight: 600;
        position: absolute;
        left: 0;
        top: 14px;
        cursor: pointer;
    }

    .fixed_nav .logo .logo_none {
        display: none;
        position: absolute;
        top:-2px;
        transition: all 2s;
    }

    .fixed_nav .logo>img {
        width: 36px;
        vertical-align: bottom;
    }

    .fixed_nav .login {
        width: 90px;
        height: 32px;
        border: 1px solid #0078f8;
        border-radius: 5px;
        position: absolute;
        top: 18px;
        right: 10px;
        display: flex;
        justify-content: space-around;
    }

    .fixed_nav .login a {
        line-height: 30px;
        font-size: 14px;
        color: #0078f8;
    }

    .fixed_nav .login a:hover {
        color: #3292f9;
    }

    .fixed_nav .login::after {
        content: '';
        width: 2px;
        height: 16px;
        background-color: #0078f8;
        position: absolute;
        left: 50%;
        top: 7px;
        transform: translate(-50%,0);
    }

    .fixed_nav .search {
        width: 418px;
        margin: 0;
        position: relative;
        left: 360px;
        top:11px;
    }

    .fixed_nav .container ul {
        position: absolute;
        width: 150px;
        left: 170px;
        top: 24px;
        display: flex;
        justify-content: space-around;
    }

    .fixed_nav .container> ul:nth-child(2)::after {
        content: '';
        display: inline-block;
        width: 6px;
        height: 6px;
        border-bottom: 1px solid #666666;
        border-right: 1px solid #666666;
        transform: rotate(45deg);
        position: absolute;
        top: 7px;
        left: 140px;
    }

    .fixed_nav .container ul li a {
        color: #222222;
    }

    .fixed_nav .search .search_input {
        height: 48px;
    }

    .fixed_nav .search .search_input span {
        margin: 7px 0px;
        line-height: 30px;
        font-size: 15px;
    }

    .fixed_nav .search .search_input span::after {
        top: 12px;
    }

    .fixed_nav .search .search_input input {
        width: 210px;
        font-size: 15px;
        
    }

    .fixed_nav .search .search_input button {
        height: 44px;
        width: 100px;
    }

    section {
        position: relative;
        width: 100%;
        min-width: 1000px;
        height: 400px;
        overflow: hidden;
    }

    section > ul {
        width:1000%;
        min-width: 1000px;
        position: absolute;
        left: 0px;
        top: 0px;
    }

    section > ul li {
        width: 10%;
        min-width: 1000px;
        float: left;
    }

    section ul li img {
        width: 100%;
        min-width: 1000px;
        height: 400px;
    }

    section .btns {
        display: none;
    }

    section .prev {
        width: 49px;
        height: 49px;
        background-color: rgba(0,0,0,.2);;
        border-radius: 50%;
        position: absolute;
        left: 20px;
        top: 50%;
        transform: translate(0,-50%);
        opacity: .6;
    }

    section .prev::after{
        content: '';
        display: inline-block;
        width: 12px;
        height: 12px;
        border-bottom: 2px solid #fff;
        border-right: 2px solid #fff;
        transform: rotate(135deg);
        position: absolute;
        top: 17px;
        left: 20px;
    }

    section .prev:hover {
        background-color: rgba(0,0,0,.35);;
    }

    section .next {
        width: 49px;
        height: 49px;
        background-color: rgba(0,0,0,.2);
        border-radius: 50%;
        position: absolute;
        right: 65px;
        top: 50%;
        transform: translate(0,-50%);
        opacity: .6;
    }

    section .next::after{
        content: '';
        display: inline-block;
        width: 12px;
        height: 12px;
        border-bottom: 2px solid #fff;
        border-right: 2px solid #fff;
        transform: rotate(-45deg);
        position: absolute;
        top: 17px;
        left: 15px;
    }

    section .next:hover {
        background-color: rgba(0,0,0,.35);;
    }

    section .tab_yuan {
        height: 18px;
    }

    .currens { 
        background-color: #fff!important;
    }

    section .tab_yuan ul{
        height: 18px;
        background-color: rgba(0,0,0,.3);
        display: flex;
        justify-content: center;
        align-items: center;
        border-radius: 10px;
        position: absolute;
        bottom: 15px;
        left:50%;
        padding: 0 5px;
        transform: translate(-50%,0);
    }

    section .tab_yuan ul li {
        width: 11px;
        height: 11px;
        border-radius: 50%;
        background-color: rgba(255,255,255,.5);
        margin-left: 3px;
        margin-right: 3px;
        opacity: 1;
        cursor: pointer;
    }

    .container .imgs {
        margin: 30px 0 30px 0 ;
        display: flex;
        justify-content: space-between;
    }

    .container .imgs div {
        width: 310px;
        height: 200px;
        border-radius: 5px;
        overflow: hidden;
        position: relative;
    }

    @keyframes moves {
        0% {
            top: 0;
        }
        100% {
            top: -103%;
        }
    }

    /* .container .imgs:nth-child(1):hover a{
        animation: moves 1s forwards;
    } */

    .container .imgs div img {
        width: 100%;
        height: 100%;
    }

    .container .imgs div a {
        display: block;
        position: relative;
        width: 100%;
        height: 102%;
        background-color: rgba(0, 0, 0, 0.4);
        top: 0%;
        line-height: 200px;
        text-align: center;
        font-size: 24px;
        color: #fff;
        font-weight: 700;
        z-index: 1;
    }

    .container .PPT .head {
        margin: 30px 0 15px 0;
        position: relative;
    }

    .container .PPT .head span {
        font-size: 26px;
        font-weight: 500;
    }

    .container .PPT .head ul {
        width: 450px;
        height: 50px;
        display: flex;
        justify-content: space-between;
        position: absolute;
        left: 140px;
        top: 5px;
    }

    .container .PPT .head ul li {
        width: 100px;
        height: 25px;
        background-color: #f2f2f2;
        color: #666;
        font-size: 14px;
        line-height: 25px;
        text-align: center;
    }

    .currte {
        background-color: #007bf8!important;
        color: #fff!important;
    }

    .container .PPT .head a {
        display: block;
        float: right;
        margin-right: 15px;
        position: relative;
        color: #222222;
        font-size: 14px;
    }

    .container .PPT .head a::after {
        content: "";
        width: 6px;
        height: 6px;
        border-bottom: 2px solid #333;
        border-right: 2px solid #333;
        transform: rotate(-45deg);
        position: absolute;
        top: 6px;
        left: 56px;
    }

    .container .PPT .head ul li {
        cursor: default;
    }

    .container .PPT .content ul {
        display: flex;
        justify-content: space-between;
    }

    .container .PPT .content ul li {
        width: 300px;
        height: 470px;
        border: 1px solid #f0f0f0;
        overflow: hidden;
        border-radius: 5px;
        position: relative;
    }

    .container .PPT .content ul li img {
        width: 300px;
    }

    .container .PPT .content > div {
        display: none;
    }

    .container .PPT .content > div:nth-child(1) {
        display: block;
    }

    .container .PPT .content ul li p {
        display: block;
        width: 300px;
        height: 42px;
        line-height: 42px;
        font-size: 14px;
        color: #222;
        text-align: center;
    }

    .PPT .content ul li [data-index] {
        width: 300px;
        height: 420px;
        background: rgba(37, 46, 63, 0.5);
        position: absolute;
        left: 0;
        top:0;
        display: none;
    }

    .PPT .content ul li [data-index] button {
        display: inline-block;
        width: 180px;
        height: 51px;
        line-height: 51px;
        text-align: center;
        color: #fff;
        border-radius: 5px;
        background-color: transparent;
        outline: none;
        border: none;
    }

    .PPT .content ul li [data-index] button:nth-child(1) {
        background-color: #007bf8;
        position: absolute;
        left: 50%;
        top: 150px;
        transform: translate(-50%,0);
    }

    .PPT .content ul li [data-index] button:nth-child(2) {
        border: 2px solid #fff;
        line-height: 45px;
        text-indent: 1.2em;
        position: absolute;
        left: 50%;
        top: 235px;
        transform: translate(-50%,0);
    }

    .PPT .content ul li [data-index] button:nth-child(2) img {
        margin-left: 25px;
    }

    .PPT .content ul li [data-index] button:hover {
        background-color: #3695f9;
        border: none;
    }

    .PPT .content ul li [data-index] a {
        color: #fff;
        vertical-align: middle;
        font-size: 16px;
    }

    .PPT .content ul li [data-index] img {
        width: 20px;
        height: 20px;
        vertical-align: middle;
        margin-left: 8px;
    }

    .container article {
        position: relative;
        margin: 30px 0 30px 0;
    }

    .container article > ul {
        display: flex;
        justify-content: space-between;
    }

    .container article > ul > li {
        width: 420px;
        height: 445px;
        border: 1px solid #ebebeb;
        border-radius: 5px;
    }

    .container article > ul > li .head {
        width: 420px;
        height: 50px;
        position: relative;
    }

    .container article > ul > li .head img {
        width: 25px;
        height: 25px;
        margin: 12.5px 0 0 15px;
        vertical-align: bottom;
    }

    .container article > ul > li .head :nth-child(2) {
        color: #fff;
        font-size: 18px;
    }

    .container article > ul > li .head :nth-child(3) {
        color: #fff;
        font-size: 14px;
        position: absolute;
        top: 15px;
        right: 40px;
    }

    .container article > ul > li .head :nth-child(3):after {
        content: "";
        width: 6px;
        height: 6px;
        border-bottom: 2px solid #fff;
        border-right: 2px solid #fff;
        transform: rotate(-45deg);
        position: absolute;
        top: 6px;
        right: -10px;
    }

    .container article > ul > li:nth-child(1) .head {
        background: url(../img/PPT教程.png) no-repeat;
        background-size: 100% 100%;
    }

    .container article > ul > li:nth-child(2) .head {
        background: url(../img/Word教程.png) no-repeat;
        background-size: 100% 100%;
    }

    .container article > ul > li:nth-child(3) .head {
        background: url(../img/Excel教程.png) no-repeat;
        background-size: 100% 100%;
    }

    .container article ul li .content ul {
        width: 380px;
        height: 360px;
        margin: 20px auto;
        position: relative;
        /* display: flex;
        flex-flow: column nowrap; */
    }

    .container article ul li .content ul li {
        width: 380px;
        height: 36px;
        line-height: 36px;
        /* 溢出文本用...方式显示 */
        text-overflow: ellipsis;
        overflow: hidden;
        /* 规定段落中文本不换行 */
        white-space: nowrap;
        font-size: 14px;
        color: #4e4e4e;
    }

    .container article ul li .content ul li span {
        color: #888;
        margin-right: 5px;
    }

    .container article ul li .content ul li:hover {
        background-color: #eff5fc;
        cursor: pointer;
    }

    .frist {
        color: #fc7750!important;
    }

    .second {
        color: #569ffd!important;
    }

    .third {
        color: #30c489!important;
    }

    .container .list_friend .head {
        width: 100%;
        height: 60px;
        border-top: 1px solid #ebebeb;
    }

    .container .list_friend .head ul {
        width: 200px;
        display: flex;
        justify-content: space-around;
        line-height: 60px;
        color: #222;
        font-size: 15px;
    }

    .container .list_friend .head ul li {
        cursor: pointer;
    }

    .container .list_friend .head .current {
        color: #0078f8;
    }
    
    .container .list_friend .body {
        width: 100%;
        font-size: 14px;
        margin-top: 10px;
        color: #7a7a7a;
    }

    .container .list_friend .body ul {
        display: flex;
        flex-flow: row wrap;
    }

    .container .list_friend .none {
        display: none;
    }

    .container .list_friend .body ul li {
        padding: 0 10px 0 10px;
        line-height: 30px;
    }

    .container .list_friend .body ul li:hover {
        color: #0078f8;
        cursor: pointer;
    } 

    footer {
        width: 100%;
        min-width: 1300px;
        height: 340px;
        margin-top: 50px;
        background-color: #2b3139;
    }

    footer .container {
        height: 100%;
        position: relative;
    }

    footer .container ul {
        position: absolute;
    }

    footer .container ul li{
        padding: 10px 0 10px 0;
        color: #95989c;
        font-size: 12px;
    }

    footer .container ul .big {
        color: #c2c4c6;
        font-size: 14px;
        margin-bottom: 25px;
    }

    footer .container .bottom {
        width: 100%;
        height: 65px;
        border-top: 1px solid #434951;
        position: absolute;
        bottom: 0;
        text-align: center;
        line-height: 65px;
        color: #6c7076;
        font-size: 12px;
    }

    footer .container ul{
        position: absolute;
        top:50px
    }

    footer .container .ul_1 {
        left: 0;
    }

    footer .container .ul_2 {
        left: 240px;
    }

    footer .container .ul_3 {
        top: 50px;
        right: 400px;
        width: 400px;
        display: flex;
        flex-flow: row wrap;
        justify-content: space-between;
    }

    footer .container .ul_3 li {
        width: 25%;
        padding: 0;
    }

    footer .container .ul_4 {
        right: 0px;
    }

    footer .container .ul_4 li img {
        width: 80px;
        height: 80px;
        margin-left: 5px;
    }

    .ajax {
        display: none;
    }

    .container .search .search_input .search_content1 {
        width: 665px;
        height: 200px;
        position: absolute;
        left: 310px;
        top: 60px;
        background-color: #fff;
        z-index: 5;
        padding: 0px 18px;
        box-shadow:  0px 2px 20px 0px rgba(0, 0, 0, 0.08);
        display: flex;
        justify-content: space-around;
        flex-flow: row wrap;
        align-content: space-around;
        text-align: center;
        font-size: 24px;
    }

    .container .search .search_input .search_content1 p {
        display: block;
        width: 25%;
    }

    .cbl {
        width: 45px;
        height: 100%;
        background-color: #ffffff;
        position: fixed;
        right: 0px;
        top:0;
        box-shadow: 5px 5px 10px 5px rgb(0 0 0 / 8%);
        z-index: 11;
    }

    .cbl ul li {
        width: 100%;
        height: 80px;
        text-align: center;
        font-size: 12px;
        padding-top: 15px;
        border-bottom: 1px solid #e9e9e9;
    }

    .cbl ul li:hover {
        background-color: #0078f8;
        color: #fff;
    }

    .cbl ul li > img {
        width: 22px;
        height: 22px;
        margin: 0px 11.5px 0;
        position: relative;
    }

    .cbl .cbl_zq {
        width: 300px;
        height: 125px;
        position: absolute;
        left: -300px;
        top: 60px;
        display: none;
        border-radius: 5px;
    }

    .cbl .cbl_zq img {
        width: 300px;
    }

    .cbl .cbl_kf {
        width: 240px;
        height: 170px;
        position: absolute;
        top: 120px;
        left: -240px;
        background-color: #fff;
        border-radius: 5px;
        display: none;
    }

    .cbl .cbl_kf span {
        display: block;
        width: 240px;
        height: 34px;
        background-color: #0078f8;
        line-height: 34px;
        text-indent: 15px;
        font-size: 12px;
        color: #fff;
    }

    .cbl .cbl_kf p {
        font-size: 14px;
        text-indent: 30px;
        margin-top: 15px;
        color: #777;
    }

    .cbl .cbl_kf p img {
        vertical-align: bottom;
        margin-right: 5px;
    }

    .cbl .cbl_kf button {
        width: 106px;
        height: 32px;
        line-height: 32px;
        background-color: #0078f8;
        outline: none;
        border: none;
        border-radius: 20px;
        color: #fff;
        position: relative;
        top: 20px;
        left: 40px;
    }

    .cbl .cbl_kf button img {
        margin-right: 5px;
        vertical-align: text-top;
    }

    .cbl .back {
        position: absolute;
        bottom: 0;
        height: 80px;
        text-align: center;
        font-size: 12px;
        cursor: pointer;
    }

    .cbl .back img {
        width: 14px;
        height: 16px;
        margin: 25px 15px 0;
    }

    .cbl .back:hover  {
        color: #fff;
        background-color: #0078f8;
    }

    .cbl ul li img:nth-child(2) {
        display: none;
    }

    .cbl ul li:hover img:nth-child(1){
        display: none;
    }

    .cbl ul li:hover img:nth-child(2){
        display: block;
    }

    .cbl .back:hover img:nth-child(1){
        display: none;
    }

    .cbl .back img:nth-child(2){
        display: none;
    }

    .cbl .back:hover img:nth-child(2){
        display: block;
    }
}

.background {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;;
    height: 100%;
    background-color: rgba(0, 0,0,.7);
    z-index: 20;
    display: none;
}

.background .denglu {
    width: 678px;
    height: 420px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    border-radius: 5px;
    opacity: 1;
    animation: scl 1s ;
}

@keyframes scl {
    0%{
        transform: translate(-50%,-50%) scale(0);
    }
    100%{
        transform: translate(-50%,-50%) scale(1);
    }
}

@keyframes slc {
    0%{
        transform: translate(-50%,-50%) scale(1);
    }
    100%{
        transform: translate(-50%,-50%) scale(0);
    }
}

.background .denglu .left {
    width: 275px;
    height: 420px;
    float: left;
    background: url(../img/login_modal_bg2.png) no-repeat center center;
    background-size: 100% 100%;
}

.background .denglu .left ul {
    font-size: 14px;
    color: #fff;
    margin-left: 40px;
    margin-top: 45px;
}

.background .denglu .left ul li{
    margin-bottom: 20px;
}

.background .denglu .right {
    width: 403px;
    height: 420px;
    float: right;
    background-color: #fff;
    position: relative;
}

.background .denglu .right ul {
    width: 260px;
    height: 38px;
    text-align: center;
    line-height: 38px;
    font-size: 18px;
    font-weight: 700;
    position: absolute;
    top:60px;
    left: 85px;
}

.background .denglu .right ul li {
    width: 130px;
    height: 28px;
    float: left;
    line-height: 28px;
}
.background .denglu .right ul li:hover {
    color: #007bf8;
}

.background .denglu .right p {
    font-size: 14px;
    color: #999;
    position: absolute;
    top: 320px;
    left: 130px;
}

.background .denglu .right ul li:nth-child(1) {
    color: #007bf8;
    border-right: 1px solid #e9e9e9;
}

.background .denglu .right .ewm {
    width: 200px;
    height: 200px;
    border: 1px solid #e9e9e9;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}

.background .denglu .right .ewm img {
    width: 160px;
    height: 160px;
    margin: 20px 0 0 20px;
}

.background .denglu .right span {
    position: absolute;
    right: 15px;
    top: 15px;
    cursor: pointer;
}

